1856961 has 24 divisors (see below), whose sum is σ = 2906280. Its totient is φ = 1138176.

The previous prime is 1856947. The next prime is 1856963. The reversal of 1856961 is 1696581.

1856961 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 1166400 + 690561 = 1080^2 + 831^2 .

It is not a de Polignac number, because 1856961 - 2¹⁴ = 1840577 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

1856961 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1856963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7995 + ... + 8223.

It is an arithmetic number, because the mean of its divisors is an integer number (121095).

2^1856961 is an apocalyptic number.

It is an amenable number.

1856961 is a deficient number, since it is larger than the sum of its proper divisors (1049319).

1856961 is a wasteful number, since it uses less digits than its factorization.

1856961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 302 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1856961 is about 1362.7035627751. The cubic root of 1856961 is about 122.9138798308.

The spelling of 1856961 in words is "one million, eight hundred fifty-six thousand, nine hundred sixty-one".